tmp88ch40mg TOSHIBA Semiconductor CORPORATION, tmp88ch40mg Datasheet - Page 69

• Manufacturer Part Number: tmp88ch40mg
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

11. Motor Control Circuit (PMD: Programmable motor driver)
motor control circuit can control brushless DC motors or AC motors with or without sensors. With its primary func-
tions like those listed below incorporated in hardware, it helps to accomplish sine wave motor control easily, with the
software load significantly reduced.
The TMP88CH40MG contains one channel of motor control circuits used for sinusoidal waveform output. This
1. Rotor position detect function
2. Independent timer and timer capture functions for motor control
3. PWM waveform generating function
4. Protective function
5. Emergency stop function in case of failure
6. Auto commutation/Auto position detection start function
7. Electrical angle timer function
8. Waveform arithmetic circuit
• Can detect the rotor position, with or without sensors
• Can be set to determine the rotor position when detection matched a number of times, to prevent erro-
• Can set a position detection inhibit period immediately after PWM-on
• Contains one-channel magnitude comparison timer and two-channel coincidence comparison timers
• Generates 12-bit PWM with 100 ns resolution
• Can set a frequency of PWM interrupt occurrence
• Can set the dead time at PWM-on
• Provides overload protective function based on protection signal input
• Can be made to stop in an emergency by EMG input or timer overflow interrupt
• Not easily cleared by software runaway
• Comprised of dual-buffers, can activate auto commutation synchronously with position detection or
• Can set a position detection period using the timer function and start auto position detection at the set
• Can count 360 degrees of electrical angle with a set period in the range of 0 to 383
• Can output the counted electrical angle to the waveform arithmetic circuit
• Calculate the output duty cycle from the sine wave data and voltage data which are read from the RAM
• Output the calculation result to the waveform synthesis circuit
neous detection
that operate synchronously for position detection
timer
time
based on the electrical angle timer
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TMP88CH40MG